ovl: Fix Leaked Dentry in Kernel
Summary
GSD-2021-1000088: ovl: fix leaked dentry. Affects Kernel versions >= 6815f479ca90ee7fd2e28b2a420f796b974155fe, < d587cfaef72b1b6f4b2774827123bce91f497cc8. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the security and stability of the system. The Overlay Filesystem (ovl) is a feature in the Kernel that allows multiple file systems to be layered on top of each other, providing a unified view. However, a vulnerability has been discovered in the ovl module that can lead to a leaked dentry, potentially impacting the security and performance of the system.
Vulnerability Detail
The ovl module in the Kernel suffers from a vulnerability that causes a leaked dentry. A dentry is a data structure used to represent directory entries in the file system. When a file or directory is accessed, a dentry is created to store its metadata. In the case of the ovl module, a dentry can be leaked under certain circumstances, leading to resource leaks and potential security issues. This vulnerability was introduced in version v5.8 of the Linux Kernel and has been fixed in version v5.12.2.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround available for this vulnerability. The recommended approach is to update the Kernel to the fixed version.
Conclusion
The ovl module in the Linux Kernel has been found to have a vulnerability that can result in a leaked dentry. This can lead to resource leaks and potential security issues. It is crucial to update the Kernel to version v5.12.2 or later to fix this vulnerability. No specific workaround is available. It is recommended to stay updated with the latest security patches and seek further support if needed.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can lead to resource leaks and potential security issues in the system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and it will provide real-time alerts for open-source vulnerabilities.
The exact attack vectors and exploitability of this vulnerability have not been proven yet. However, it is always recommended to apply security updates to mitigate potential risks.
There are no known instances of this vulnerability being exploited in the wild. However, it is important to stay updated with the latest security patches to minimize the risk of exploitation.
For further support and assistance in vulnerability remediation, you can reach out to info@devnack.com.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
